I start digging potatoes, as we need them, a couple weeks after they flower (mid July). I plant the early Reds, Fingerlings, and Butterballs at the front of the bed. I start digging here and then gradually move to the back of the bed to where I planted the keeper potatoes, the Russets and Green Mountains.
My Russet tubers are small – as usual. I plant them close together (about 9 inches). With a small space, I like to squeeze in as much as I can. If I spaced the seed potatoes more, I’d have bigger potatoes, but I’m not sure if the total yield (weight) would be more. I figure that this year I got 40 lbs of potatoes from 35 square feet (a 10 x 3.5 foot bed, with six 3.5 ft rows).
I’ve found that small baked potatoes are really nice. Perfect for a single serving. They bake up fluffy inside and crisp skin outside. Ahhh….